This rule, and "unless ________, then (not) ________." I've heard that it's a good to use a real life situation to figure out the inferences to rules. For example, I remember "if it rains, then I will get wet" for the "if ________, then ________" rule. That way when I reverse it and say "if I get wet," it makes sense that it's not necessarily from rain. But I can't seem to think of any examples that work for these two rules and whenever I encounter them, it takes me a good 30 seconds to figure out the inferences. So does anyone have a one sentence trick for remembering these?

wishyfishy wrote:This rule, and "unless ________, then (not) ________." I've heard that it's a good to use a real life situation to figure out the inferences to rules. For example, I remember "if it rains, then I will get wet" for the "if ________, then ________" rule. That way when I reverse it and say "if I get wet," it makes sense that it's not necessarily from rain. But I can't seem to think of any examples that work for these two rules and whenever I encounter them, it takes me a good 30 seconds to figure out the inferences. So does anyone have a one sentence trick for remembering these?

"If not" diagrams just like "If," except with a "not" (usually represented by ! or ~)If not A then B. ~A --> B

If you want a cute sentence, my dad used to say things like, "If they ain't bitchin' they ain't happy." Same "if not" diagram.~B --> ~H

You can also think of "unless" as "if not."Unless I have oxygen, I will die (or I will die unless I have oxygen).~O --> D